The scientific and technological legacy of the 20th century includes milestones such as quantum mechanics and pioneering space missions. Both endeavours have opened new avenues for the furthering of our understanding of Nature, and are true landmarks of modern science. Quantum theory and space science form building blocks of a powerful research framework for exploring the boundaries of modern physics through the unique working conditions offered by experimental tests performed in space.

Space-based sources of entangled photons promise the formation of global quantum communication networks, long-distance tests of quantum theory and the interplay between relativity and quantum entanglement.

Long free-fall times enable high-precision tests of general relativity and tests of the equivalence principle for quantum systems.

Harnessing microgravity, high vacuum and low temperature of deep space promises allowing the study of deviations from standard quantum theory for high-mass test particles. Space-based experiments of metrology and sensing will push the precision of clocks, mass detectors and transducers towards the engineering of novel quantum technologies.

Such an exciting framework is what “Quantum Technologies in Space (QTSpace)” aims at providing. QTSpace will embody a visionary opportunity for furthering the comprehension of fundamental mechanisms of physics in an entirely new context.

The goal of the meeting is to foster the formation of a consortium to push the future implementation of a space mission to test the foundations of physics. Particular effort will be put on discussing necessary technology developments in the handling of high-mass test particles and in assuring the required environmental conditions for macroscopic quantum experiments in space.

The focus of the workshop is on the application of Quantum Computing for downstream data processing and Earth Observation data exploitation. It aims to prepare the ground for the opportunities that will be presented when the quantum community will be able to produce software for quantum-enhanced optimisation problems of direct use in big data management. Together with Machine Learning, Quantum Computing has the potential to be a game-changer in data science and applications.

The workshop will bring together experts in the fields of matter wave interferometry, levitated optomechanics, and microgravity research to explore prove of principle and technology testing capabilities for future quantum technologies in space based on large-mass matter wave interferometry. Therefore the workshop aligns perfectly with the agenda of WG2&3 of the COST action QTSpace.